Update ExampleRedditAPI.md
Update ExampleRedditAPI.md

Change `req => req.json()` to `response => response.json` in `fetchPosts` to match implementation in AsyncActions.md
tatsuhino/reactPractice,joaomilho/redux,doerme/redux,joshwreford/idle-game,tappleby/redux,naoishii/ohk2016C,bvasko/redux,gaearon/redux,tappleby/redux,dieface/redux,joshwreford/idle-game,splendido/redux,tatsuhino/reactPractice,neighborhood999/redux,Aweary/redux,leoasis/redux,javascriptjedi/redux-select,chentsulin/redux,chentsulin/redux,mikekidder/redux,neighborhood999/redux,splendido/redux,mjw56/redux,okmttdhr/redux-with-comment,paulkogel/redux,jas-chen/typed-redux,ptkach/redux,CompuIves/redux,roth1002/redux,Aweary/redux,CompuIves/redux,lifeiscontent/redux,jas-chen/typed-redux,ptkach/redux,lifeiscontent/redux,mjw56/redux,gaearon/redux,keyanzhang/redux,roth1002/redux,jas-chen/redux,bvasko/redux,joaomilho/redux,doerme/redux,edge/redux,tappleby/redux,jas-chen/redux